A phase diagram of a pure compound has a triple point at 13 °C and 205 mm Hg, a

Question

A phase diagram of a pure compound has a triple point at 13 °C and 205 mm Hg, a normal melting point at 17 °C, and a normal boiling point at 87 °C. Which of the following statement(s) regarding this compound are incorrect? 1. The density of the solid is greater than that of the liquid. 2. If the pressure is reduced from 535 mm Hg to 25 mm Hg at a constant temperature of 12 °C, sublimation occurs. 3. At a constant pressure of 835 mm Hg, complete evaporation will occur if the temperature is raised from 13 °C to 81 °C.

1 only

2 only

3 only

1 and 2

Explanation / Answer

Both 1 AND 2 statements are correct

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